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Study of wettability of Eurofer steel by the liquid metal sodium-potassium (NaK-78)

Abou-Sena, A.; Arbeiter, F.

Abstract:
The main mission of the International Fusion Materials Irradiation Facility (IFMIF) is to
provide irradiation conditions, similar to those of the DEMO fusion reactor, for several testing
capsules packed with specimens of Eurofer steel which is the main candidate as a structural
material for the first wall and blanket of the fusion reactor. Using the liquid metal sodiumpotassium alloy (NaK-78) to fill the small gaps among the Eurofer specimens was introduced
to improve the thermal conduction among the specimens and achieve uniform temperature
distribution. Hence, the wettability of Eurofer specimens by NaK is investigated by two
experiments to evaluate the success of this concept. In the first experiment, a stack of IFMIF
Eurofer specimens is packed in a steel capsule that has two sides of glass to observe the NaK
filling process by video recording. The specimens and NaK are heated up to 400ºC by two
heaters attached to the capsule. The NaK flow in the capsule and wettability of the specimens
are evaluated. The second experiment has two Eurofer strips, with a gap between them, placed
in a temperature-controlled crucible fi ... mehr


Zugehörige Institution(en) am KIT Institut für Neutronenphysik und Reaktortechnik (INR)
Publikationstyp Vortrag
Jahr 2014
Sprache Englisch
Identifikator KITopen ID: 230095432
HGF-Programm 31.40.04; LK 01
Erschienen in 28th Symposium on Fusion Technology (SOFT 2014), September 29 - October 3, 2014, San Sebastian, E
URLs Abstract (PDF)
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